Refine
Year of publication
Document Type
- Article (31263)
- Part of Periodical (11960)
- Book (8319)
- Doctoral Thesis (5734)
- Part of a Book (3967)
- Working Paper (3389)
- Review (2939)
- Contribution to a Periodical (2369)
- Preprint (2200)
- Report (1560)
Language
- German (43299)
- English (29600)
- French (1071)
- Portuguese (843)
- Multiple languages (320)
- Spanish (309)
- Croatian (302)
- Italian (198)
- mis (174)
- Turkish (168)
Keywords
- Deutsch (1082)
- Literatur (873)
- taxonomy (766)
- Deutschland (553)
- Rezension (511)
- new species (452)
- Rezeption (354)
- Frankfurt <Main> / Universität (341)
- Übersetzung (329)
- Geschichte (301)
Institute
- Medizin (7754)
- Präsidium (5228)
- Physik (4538)
- Extern (2742)
- Wirtschaftswissenschaften (2710)
- Gesellschaftswissenschaften (2378)
- Biowissenschaften (2194)
- Biochemie und Chemie (1978)
- Frankfurt Institute for Advanced Studies (FIAS) (1775)
- Center for Financial Studies (CFS) (1632)
In ultraperipheral collisions (UPCs) of relativistic nuclei without overlap of nuclear densities, the two nuclei are excited by the Lorentz-contracted Coulomb fields of their collision partners. In these UPCs, the typical nuclear excitation energy is below a few tens of MeV, and a small number of nucleons are emitted in electromagnetic dissociation (EMD) of primary nuclei, in contrast to complete nuclear fragmentation in hadronic interactions. The cross sections of emission of given numbers of neutrons in UPCs of 208Pb nuclei at sNN−−−√=5.02 TeV were measured with the neutron zero degree calorimeters (ZDCs) of the ALICE detector at the LHC, exploiting a similar technique to that used in previous studies performed at sNN−−−√=2.76 TeV. In addition, the cross sections for the exclusive emission of one, two, three, four, and five forward neutrons in the EMD, not accompanied by the emission of forward protons, and thus mostly corresponding to the production of 207,206,205,204,203Pb, respectively, were measured for the first time. The predictions from the available models describe the measured cross sections well. These cross sections can be used for evaluating the impact of secondary nuclei on the LHC components, in particular, on superconducting magnets, and also provide useful input for the design of the Future Circular Collider (FCC-hh).
Eritrean refugees crisscross between countries in the Horn of Africa and North Africa in search of a safe place. Along their journeys, they are looted, threatened, intimidated, violated, and held for ransom. This book revisits the human trafficking crisis that first emerged in the Sinai at the end of 2008 and examines the expansion of human trafficking of Eritrean refugees and other forms of exploitation beyond the Sinai. It focuses on the modus operandi of these practices and on identifying their key facilitators and beneficiaries. The book locates the origin of these practices within Eritrea; it reveals how a deliberate policy of impoverishment and human rights abuses has driven the people out of the country, and how individuals within Eritrea, and particularly within the ruling party, benefit from the smuggling and trafficking of Eritrean refugees. The use of information communication technologies (ICTs) is identified as key to the new modus operandi of this criminal business and is found to further facilitate widespread collective trauma amongst Eritreans, who witness the abuse of their family members and fellow nationals through digital networks. An entire section in this book is dedicated to assessing the extent and effects of individual and collective trauma caused by Sinai trafficking and to examining potential approaches to healing. Other sections discuss the vulnerabilities of Eritrean minors and women, and the connections between human trafficking, terrorism and organ trafficking. The last section of the book raises the question of accountability. It examines and evaluates international responses to this forgotten crisis, and discusses the need for policies that tackle the problem where it emerges: in Eritrea.
W±-boson production in p–Pb collisions at √sNN = 8.16 TeV and Pb–Pb collisions at √sNN = 5.02 TeV
(2022)
The production of the W± bosons measured in p−Pb collisions at a centre-of-mass energy per nucleon−nucleon collision sNN−−−−√=8.16 TeV and Pb−Pb collisions at sNN−−−−√=5.02 TeV with ALICE at the LHC is presented. The W± bosons are measured via their muonic decay channel, with the muon reconstructed in the pseudorapidity region −4<ημlab<−2.5 with transverse momentum pμT>10 GeV/c. While in Pb−Pb collisions the measurements are performed in the forward (2.5<yμcms<4) rapidity region, in p−Pb collisions, where the centre-of-mass frame is boosted with respect to the laboratory frame, the measurements are performed in the backward (−4.46<yμcms<−2.96) and forward (2.03<yμcms<3.53) rapidity regions. The W− and W+ production cross sections, lepton-charge asymmetry, and nuclear modification factors are evaluated as a function of the muon rapidity. In order to study the production as a function of the p−Pb collision centrality, the production cross sections of the W− and W+ bosons are combined and normalised to the average number of binary nucleon−nucleon collision ⟨Ncoll⟩. In Pb−Pb collisions, the same measurements are presented as a function of the collision centrality. Study of the binary scaling of the W±-boson cross sections in p−Pb and Pb−Pb collisions is also reported. The results are compared with perturbative QCD (pQCD) calculations, with and without nuclear modifications of the Parton Distribution Functions (PDFs), as well as with available data at the LHC. Significant deviations from the theory expectations are found in the two collision systems, indicating that the measurements can provide additional constraints for the determination of nuclear PDF (nPDFs) and in particular of the light-quark distributions.
Brandaktuelles Theater : die Chaincourt Theatre Company adaptiert Ray Bradburys "Fahrenheit 451"
(2023)
W±-boson production in p–Pb collisions at √sNN = 8.16 TeV and Pb–Pb collisions at √sNN = 5.02 TeV
(2022)
The production of the W± bosons measured in p−Pb collisions at a centre-of-mass energy per nucleon−nucleon collision sNN−−−−√=8.16 TeV and Pb−Pb collisions at sNN−−−−√=5.02 TeV with ALICE at the LHC is presented. The W± bosons are measured via their muonic decay channel, with the muon reconstructed in the pseudorapidity region −4<ημlab<−2.5 with transverse momentum pμT>10 GeV/c. While in Pb−Pb collisions the measurements are performed in the forward (2.5<yμcms<4) rapidity region, in p−Pb collisions, where the centre-of-mass frame is boosted with respect to the laboratory frame, the measurements are performed in the backward (−4.46<yμcms<−2.96) and forward (2.03<yμcms<3.53) rapidity regions. The W− and W+ production cross sections, lepton-charge asymmetry, and nuclear modification factors are evaluated as a function of the muon rapidity. In order to study the production as a function of the p−Pb collision centrality, the production cross sections of the W− and W+ bosons are combined and normalised to the average number of binary nucleon−nucleon collision ⟨Ncoll⟩. In Pb−Pb collisions, the same measurements are presented as a function of the collision centrality. Study of the binary scaling of the W±-boson cross sections in p−Pb and Pb−Pb collisions is also reported. The results are compared with perturbative QCD (pQCD) calculations, with and without nuclear modifications of the Parton Distribution Functions (PDFs), as well as with available data at the LHC. Significant deviations from the theory expectations are found in the two collision systems, indicating that the measurements can provide additional constraints for the determination of nuclear PDF (nPDFs) and in particular of the light-quark distributions.
Rezension zu: Michael Stolleis: Brotlose Kunst. Vier Studien zu Johann Peter Hebel (Sitzungsberichte der wissenschaftlichen Gesellschaft an der Johann Wolfgang Goethe-Universität Frankfurt am Main, Bd. XLIV, Nr. 2), Stuttgart 2006, ISBN 13: 978-3-515-08916-6, Franz Steiner Verlag, Stuttgart 2006, 19 Euro.
The aim of the meeting is to expose this current topic for critical discussion with international speakers and participants and to find solutions which optimize the integration of information services into university structures. Presentations and discussions will consider: * integrated versus cooperative models * single-unit operations, central or de-centralized faculty organisations * outsourcing services versus own organisation/effort * institutional repository versus discipline-based repository * information supply in the era of "Google print" »The Integration of Information Services into University Structures« Symposium will be taking place simultaneously with the Frankfurt Book Fair, the largest book-related event in the world attracting annually 286,621 people (2006) , thus giving participants who arrive early the chance to combine attendance at both the Book Fair and Symposium. A cultural event and dinner in one of Frankfurt's historical rooms on Friday will be a social highlight! A contingency of hotel rooms has been reserved on a »first come, first served basis« outside Frankfurt at non-Book Fair prices. More information on request.
Der Alumni-Newsletter Einblick erscheint vierteljährlich, ist kostenlos und informiert Sie aus erster Hand kurz und auf den Punkt über aktuelle Entwicklungen rund um die Goethe-Universität - Projekte, Veranstaltungen, Alumni, ProfessorInnen und Studierende sowie spannende Forschungsergebnisse und neue Studiengänge. Gleichzeitig gibt er Ihnen die Möglichkeit der Rückmeldung an das Alumni-Büro.